Fritz asthower



case, A represents a fireplace, constriieted in any cient to melt the softest wrought iron.

I and properly warmed to prevent breakage I is withdrawn, without slackening the fircs'or interrupting t crucibles can easily be inspected \ihcn'evcr desired.

' guitar gram gaunt @ffitt.

FRITZ ASTHQWEB, OF WITTEN AN DER RUHR. PRUSSIA, ASSIGNOR TO OSEPH R. VON WESSELY, OF NEW YORK CITY.

Letters Patent No. 78,041, dated May 19, 1868.

IMPROVEMENT IN TlIE MANUFACTURE OF STEEL.

To ALL WHOM IT MAY concenm Be it known that 1, Farm As'raowaa, o invented a new and improvedMethod oi Manufacturing S description, reference being bad to the accompanying dra which- Figure '1 represents :1. ve carrying out my improved process, and

Figure 2 s horizontal section through the same at the line y y of fig. 1 I i The objeot of my invention is toprodu'ce cast steel of uniform quality in a cheapcr way than has hcretofore'been practised, and'tothis end'my invention consists in a novel' method of smelting the materials, to p'roduce the steel, in closed crucibles, in a. furnace heatedby pit-coal, and so'arrangcd that the contents of the crucibles can readily be inspected clnrihg the process, and the crucibles can be'removed from or replaced in the furnace at any stage of the process without interrupting the working of'the furnace. I y i In the accompanying drawings, which show afnrnace'devised byme for carrying out my improved proapproved-well lgnoivnavay for'the combn'stionsot the pit-goal. to support combustion is to be supplied by a. suitable blast-apparatus, through flues or;

The oxygen nrece ssar A tuyer'esyas is avail understood. The products of combustionescape through a throat, B, into the first crucible V chamber, G, andthcnc'c through the'poss'age D to ,thssecond crucible orme'lting-chamber, E, and"finally escape F. The ratio oi' thear'ea of the fire-chamhcr A to thefiuesB D is suchas to securea through the chimney 4 uniformly regular combustion under a given pressure of the blast, and the temperature thus generated is suiiif Witten an der Ruhr, Westphalia, in the'Kin gdompi Prussiaflhavo tool, of which the foll'otving' is a full, clear, andexact wings, which make part of this speciflcatiom'and in rtical longitudinal section at the line a: a: of fig 2," through a furnace adapted for he proper ingredients to produce the required quality of steel,

' The crucibles having been first filled with t unted on roll rs or suspended from cranes in the'usual way,) through doors H, sliding vertically in tongs, mo y r by cords running over pulleys, and counterbnlancedby' suitable weights, as usual in'suchways suspended cases. Each crucible is provided with a cover, having an opening in its top, Vertical openings in the domes of the chambers are closcdby plugs I.-. As the criiiiibles are arranged beneath these openings, the workman can at anytime remove the plugs I and 0, contents of thecrucibles. trucks, or suspended from cranes, and removed to the, moulds to. discharge their contents.

By my process the furnace is kept constantly heated, and one crucible can be" inserted asfast as another What I claim as my invention, and desire .to secure by Letters Patent, is- I V 1. The combination .of the fire-chamber- A and crucible-chambers C, E, as and for the purposes set forth. -2. The constructi'on of the d omoiofhthc furnace withvertimil plugged openings; as described. to afford a view of the interior. i r

3. The crucibles, having plugged cov described. i

y In testimony whereof, I have hereunto subscribed my name.

FRITZ AS lHOWER.

, are introduccd'into their respective chambers (by means 'of long closed by a removable plug c. i

and thn s'exuminc thc condition of-the When their contents are smclterl, the crucibles are \rithdrai vmnnd placed upon he working of the furnace, and the contents of the I i.

ers arrungejiheneath the openings in the demo. as amlfor the purpose 

